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Tianjin Grewin Technology Co., Ltd.

Hall Sensor, DC Leakage, Closed Loop manufacturer / supplier in China, offering Closed Loop Hall Sensor for DC Leakage Current, 0.1-1000A Clamp Current Transformer with ISO9001 IEC, 0.1-1000A Clip-on Ammeter and so on.

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Closed Loop Hall Sensor for DC Leakage Current

FOB Price: US $0.95 / Piece
Min. Order: 5 Pieces
Min. Order FOB Price
5 Pieces US $0.95/ Piece
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Port: Tianjin, China
Production Capacity: 50000 PCS /Week
Payment Terms: L/C, T/T, Western Union, Money Gram

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Basic Info
  • Model NO.: GWDLS
  • Phase: Current, Power and Energy Monitoring D
  • Cooling Method: Dry-type Transformer
  • Certification: CE RoHS
  • Frequency Characteristics: 50-400Hz
  • Brand: Grewin
  • Mini CT Exterior Material: PBT Resin UL Flame
  • Isolation Current: 2500 Vrms for 1 Minute
  • Surge Withstand: 5000V
  • Mini Current Transformer Frequency: 50 to 400 Hz
  • Trademark: grewin
  • Specification: CE ROHS
  • HS Code: 850450000
  • Application: Power, Electronic, Instrument, Lighting, PBT Resin UL Flame
  • Core: PBT Resin UL Flame
  • Winding Type: Two-winding Transformer
  • Usage: Voltage, Power and Energy Monitoring D
  • Shape of Core: Laminated
  • Mini Current Transformerretardant Rating: 94-V0
  • Interior Insulation: Epoxy Encapsulated
  • Dielectric Resistance: 1000 M Ohms 500 VDC
  • Operating Temperature: 25 to 55c, -40 to +85c Optional
  • Accuracy Class: 0.2 0.1
  • Transport Package: Export Standard Cartons with Strong Pallets
  • Origin: China
Product Description
Closed Loop Hall Sensor for DC Leakage Current
Closed Loop Hall Sensor for DC Leakage Current
Closed Loop Hall Sensor for DC Leakage Current
DC leakage current sensor uses magnetic modulation principle, applied to DC panel and other devices. Accurately measure the mA grade DC leakage current signal. Use core through input pattern and have many kinds of outline structures. Can meet various application requirements, and customer can also define primary rated current and secondary output based on their actual demand.
Closed Loop Hall Sensor for DC Leakage Current

Hall Sensors \DC Leakage Current Sensor.
Our main product are miniature voltage transformer ,miniature current transformer ,instrument current transformer , clamp on ccurrent transformer ,split core current transformer ,three phase current transformer ,zero-flux current transformer.
Measuring range 120% * Ipn
Accuracy  1%
Overload capacity 20Arms
Responding time ≤300mS
Operating temperature -25 - +70 ºC 
UL 94-V0 complied
DC transmission 
Electric power storage detection
DC screen
Power supply
Large-scale medical equipments 
Wind power generation
Communication base station

Closed Loop Hall Sensor for DC Leakage Current

Other typical Products
Single Turn Primary Mini Current Transformer(specifications)
Exterior MaterialPBT Resin UL flame retardant rating 94-V0
Interior InsulationEpoxy Encapsulated
Isolation Voltage2500 Vrms for 1 minute
Dielectric Resistance1000 M Ohms @ 500 Vdc
Surge Withstand5000V(1.2/50μs standard  shock wave)optional
Rated Load Resistance100K Ohms
Operating Temperature-25 to +55ºC,-40 to +85ºCoptional
Frequency50 to 400 Hz
Accuracy Classdefined in IEC 60044-1 Part 1 Voltage Transformers Class 0.1 0.2
CertificationRoHS Compliant CE Approved
Single Turn Primary Mini Current Transformer(features)
Low cost
More than 50 standard sizes
Non-symmetrical mounting pattern
Toroidal Silicon steel and Nickel Alloy available
Single Turn Primary Mini Current Transformer(applications)
For applications that require exceptional accuracy with minimal phase angle error
Applications would include Voltage,power and energy monitoring devices


1. Products are shipped via UPS / DHL / EMS / HK EMS /     FedEx / TNT and so on expresses (door to door).
2. We Provide Drop shipping Service.
3. 20 days around delivery upon receiving payment if the qty    is lower than 1000PCS and it is not customized products.
4. In order to ensure you receive your order tax free upon  
     import, we declare lower value.
5. Shipping via EMS. UPS. FedEx and TNT express usually     takes 3~7days dependent on the destination country.

1. We accept Western Union and T/T
2. 30% deposit and 70% before shipping
3. No payment collection. We only can deliver goods after  
     geting full payment.

1. We provide 1 year warranty.
2. If the product is defective, please notify us within 3 days     of delivery.
3. All products must be returned on their original condition, in   order to qualify for a refund or exchange of goods

Our factory 

Tianjin grewin technology co., ltd is a high-tech company which integrates production, design, R&D, and sale.We-CHIPSEN-specialize in developing many kinds of electronic components. Include electronic transformers,
We are ISO 9001 and ISO 14001 certified and our products come with UL, SGS marks.
For more details, please contact us without hesitation.


Quality and honest first!
A.  Flexible service for diffierent transformers with high efficiency performance.
B.  Over 40 years experience of transformer designing and producing.
C. 100% test of every single product we produce from incoming material checking.
D.  UL, CE, ISO9001:2008
E.  We offer custom-made transformers, OEM and ODM are welcome
F.  We deliver the quality you expect at consistently competitive prices
 G. Transformer quality lifetime:10 Years.
 H. Specialty Sales service:5 -10 Years

Contact info :

Tianjin Grewin Technology Co., Ltd
Contact:VICTOR DONG                                              

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